[PDF]    http://dx.doi.org/10.3952/lithjphys.47103

Open access article / Atviros prieigos straipsnis

Lith. J. Phys. 47, 27–30 (2007)


FORMATION OF PERIODIC MULTIFILAMENTARY STRUCTURES BY USE OF HIGHLY ELLIPTIC LIGHT BEAMS
A. Dubietis, E. Kučinskas, G. Tamošauskas
Department of Quantum Electronics, Vilnius University, Saulėtekio 9, LT-10222 Vilnius, Lithuania
E-mail: audrius.dubietis@ff.vu.lt

Received 8 January 2007

Self-focusing and multiple filamentation of highly elliptic laser beams is studied experimentally in condensed media with Kerr nonlinearity (water and fused silica). We show that highly elliptic laser beam initially breaks up into one-dimensional array of filaments, producing deterministic and periodic patterns. At higher pump energies, the interplay between the neighbouring filaments gives rise to formation of complex two-dimensional spatial structures.
Keywords: self-focusing, multiple filaments, transverse instability
PACS: 42.65.Jx, 42.65.Re


PERIODINIŲ DAUGIAGIJŲ DARINIŲ GENERAVIMAS ELIPSINIAIS ŠVIESOS PLUOŠTAIS
A. Dubietis, E. Kučinskas, G. Tamošauskas
Vilniaus universitetas, Vilnius, Lietuva

Eksperimentiškai ištirtas elipsinių šviesos pluoštų fokusavimasis ir daugiagijų darinių generacija kondensuotose terpėse su Kerro netiesiškumu (vandenyje ir lydytame kvarce). Parodyta, kad labai elipsinis lazerio pluoštas dėl saviveikos pradžioje transformuojasi į vienmatį periodinį ir gerai atsikartojantį daugiagijį darinį. Atskirų šviesos gijų tarpusavio sąveika vėliau formuoja sudėtingesnius dvimačius šviesos darinius.


References / Nuorodos

[1] R.R. Alfano, The Supercontinuum Laser Source, 2nd ed. (Springer, New York, 2006),
http://dx.doi.org/10.1007/b106776
[2] S.L. Chin, S.A. Hosseini, W. Liu, Q. Luo, F. Theberge, A. Aközbek, A. Becker, V.P. Kandidov, O.G. Kosareva, and H. Schroeder, The propagation of powerful femtosecond laser pulses in optical media: Physics, applications, and new challenges, Can. J. Phys. 83, 863–905 (2005),
http://dx.doi.org/10.1139/p05-048
[3] M. Mlejnek, M. Kolesik, J.V. Moloney, and E.M. Wright, Optically turbulent femtosecond light guide in air, Phys. Rev. Lett. 83, 2938–2941 (1999),
http://dx.doi.org/10.1103/PhysRevLett.83.2938
[4] G. Méchain, A. Couairon, M. Franco, B. Prade, and A. Mysyrowicz, Organizing multiple femtosecond filaments in air, Phys. Rev. Lett. 93, 035003 (2004),
http://dx.doi.org/10.1103/PhysRevLett.93.035003
[5] T. Pfeifer, L. Gallmann, M.J. Abel, D.M. Neumark, and S.R. Leone, Circular phase mask for control and stabilization of single optical filaments, Opt. Lett. 31, 2326–2328 (2006),
http://dx.doi.org/10.1364/OL.31.002326
[6] V.P. Kandidov, N. Aközbek, M. Scalora, O.G. Kosareva, A.V. Nyakk, Q. Luo, S.A. Hosseini, and S.L. Chin, Towards a control of multiple filamentation by spatial regularization of a high-power femtosecond laser pulse, Appl. Phys. B 80, 267–275 (2005),
http://dx.doi.org/10.1007/s00340-004-1677-1
[7] H. Schroeder, J. Liu, and S.L. Chin, From random to controlled small-scale filamentation in water, Opt. Express 12, 4768–4774 (2004),
http://dx.doi.org/10.1364/OPEX.12.004768
[8] Z. Jin, J. Zhang, M.H. Lu, Y.T. Li, Z.H. Wang, Z.Y. Wei, X.H. Yuan, and W. Yu, Control of filamentation induced by femtosecond laser pulses propagating in air, Opt. Express 13, 10424–10430 (2005),
http://dx.doi.org/10.1364/OPEX.13.010424
[9] A. Dubietis, G. Tamošauskas, G. Fibich, and B. Ilan, Multiple filamentation induced by input-beam ellipticity, Opt. Lett. 29, 1126–1128 (2004),
http://dx.doi.org/10.1364/OL.29.001126
[10] G. Fibich, S. Eisenmann, B. Ilan, and A. Ziegler, Control of multiple filamentation in air, Opt. Lett. 29, 1772–1174 (2004),
http://dx.doi.org/10.1364/OL.29.001772
[11] T.D. Grow and A.L. Gaeta, Dependence of multiple filamentation on beam ellipticity, Opt. Express 13, 4594–4599 (2005),
http://dx.doi.org/10.1364/OPEX.13.004594
[12] V. Kudriašov, E. Gaižauskas, and V. Sirutkaitis, Beam transformation and permanent modification in fused silica induced by femtosecond filaments, J. Opt. Soc. Am. B 22, 2619–2627 (2005),
http://dx.doi.org/10.1364/JOSAB.22.002619
[13] M. Centurion, Y. Pu, and D. Psaltis, Self-organization of spatial solitons, Opt. Express 13, 6202–6211 (2005),
http://dx.doi.org/10.1364/OPEX.13.006202
[14] S.L. Chin, S. Petit, W. Liu, A. Iwasaki, M.-C. Nadeau, V.P. Kandidov, O.G. Kosareva, and K.Yu. Andrianov, Interference of transverse rings in multiflamentation of powerful femtosecond laser pulses in air, Opt. Commun. 210, 329–341 (2002),
http://dx.doi.org/10.1016/S0030-4018(02)01808-4
[15] K. Cook, A.K. Kar, and R.A. Lamb, White-light supercontinuum interference of self-focused filaments in water, Appl. Phys. Lett. 83, 3861–3863 (2003),
http://dx.doi.org/10.1063/1.1624640
[16] R. Danielius, A. Dubietis, A. Juozapavicius, A. Piskarskas, G. Tamosauskas, and A. Varanavicius, A versatile ultrashort laser system and its potential applications, Proc. SPIE 5137, 10–17 (2003),
http://dx.doi.org/10.1117/12.517866
[17] A. Dubietis, A. Couairon, E. Kučinskas, G. Tamošauskas, G. Gaižauskas, D. Faccio, and P. Di Trapani, Measurement and calculation of nonlinear absorption associated with femtosecond filaments in water, Appl. Phys. B 84, 439–446 (2006),
http://dx.doi.org/10.1007/s00340-006-2249-3
[18] A. Couairon, E. Gaižauskas, D. Faccio, A. Dubietis, and P. Di Trapani, Nonlinear X-wave formation by femtosecond filamentation in Kerr media, Phys. Rev. E 73, 016608 (2006),
http://dx.doi.org/10.1103/PhysRevE.73.016608